Production of white gold



No Drawing.

DAVID BELAIS, or NEW Yonx, 1v. "2.

PRODUCTION OF WHITE 6-0133. I '7 To all whom it may concern.

Be it known that I, DAVID BELAIS, a c1t1- zen of the-United States, anda resident, of

New York city, in the county and'State of New York, have invented a new.and useful Improvement in the Production of White Gold, of which thefollowing is a specification.

My invention relates to the production of a substitute for platinum. Theobject 'of my invention is to produce a composition of matter known aswhite gold that will have the appearance of platinum and that, may beused as a substitute for it, especially in the jewelry trade. Itconsists of the novel process and product herein described.

Platinum has always been a rare metal, and an expensive one, and inrecent times it has become more and more so, until now the supply iswholly insuflicient to meet the demand, and the expense has becomepractically prohibitive. As is well known, platinum is peculiarly wellfitted for such uses, especially in the jewelry art, as the setting ofdiamonds, the ornamentation of watch cases, and similar articles. By myimproved process I produce awhite gold that has the appearance ofplatinum and has characteristics that fitit extremely well for use as asubstitute for platinum for the setting of diamonds, the ornamentationof watch cases,

and similar articles, and for other similar uses, especially in thejewelry trade.

' The cost of its ingredients, and the process of producing it isrelatively very small compared with that of platinum.

In my improved process I take gold, especially or preferably fine gold,nickel, preferably pure nickel, and zinc, preferably pure zinc, and fusethem together in a suitable $pecification of Letters Patent. PatentedFeb, 10, 1920 Application filed October 5, 1918. Serial No. 256,993

crucible, thoroughly mixing them together while they are thus fused. Theresulting composition has the appearance of platinum an ;is adapted tobe used as a substitute for It is ductile and maluse. It is then readyfor'the trade.

I usea major partof fine gold, and lesser parts of pure nickel and zinc.I have found that satisfactory results can be obtained when :the finegold is used in the, proportion ofa-bout seventy-five (75) toeighty-five (85) per cent, pure nickel in the proportion of about ten(10) to eighteen (18) per cent, and pure 'zincin about the proportion ofweets-m n (apacent What I claim-as new and desire. to secure by Letters-Patent, is:

1. As,-af 'eomposition of matter a iwhite gold alloy composed ofa'inajor part of gold, and-lesser proportions of nickel and zinc.

. 2. As a composition of matter, a white goldalloy composed of a maj orpart of gold,

a lesser proportion of vnickel, and a still lesser proportion of zinc.

3. Asa composition of matter, a white gold alloy composed of gold,nickel and zinc, the proportion of the gold ranging from seventy-five toeighty-five per cent, the nickel from ten to eighteen per cent, and thezinc from two to nine per cent.

4. An alloy containing a preponderating amount of'gold together withrelatively low percentages of nickel and zinc.

In testimony whereof I have signed my name to this specificationy DAVIDBELAIS.

